2. [4] Laser Check
Example
BD
Target
:
0x41d Meas
:
0x43
OK because
0x41d+0x80=0x49d
Meas is 0x49d or less
DVD
Target
:
0x53c Meas
:
0x5a7 OK
0x53c+0x80=0x5bc
CD
Target
:
0x560 Meas
:
0x5d7 OK
0x560+0x80=0x5e0
3. [7] Enter SP Mode
Verifies the output value of each laser diode inside the pick-up area. Implement according to the following procedures.
2
After a few seconds, measurement and judgment results will be displayed as follows, and the tray will open automatically.
If all Measurement values (Meas) are less than the total numeric value of the Target value (hex) and 80 (hex) combined,
[PASS] will appear, and if any of them goes over, [NG] will appear.
1
Select "[4] Laser Check" with the
key from the Service Mode screen and press the "ENTER" key.
(perform without disc in tray)
BD Measurement values: The hexadecimal single-digit will not be displayed in Meas. Therefore
in the above example, Measurement values of up to 0x49 are considered OK, and 0x50 are considered NG.
("0x" is simply to express the hex, so it is not necessary in the calculation)
There are 15 items in the SP Mode, the main items being for Production line and Design/Development.
The following is to explain items usable in Service. Other items require time for completion,
or are not suited for Service purposes. If you select them by mistake,
press the [Stop] key to end that item you accidentally selected.
(none of the items will affect the main unit)
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